Pot Equity Guess

[Rickjohn]

When UTG+1 bets on the river I figure he has me beat, but I'm not sure. I'm guessing I have about a 10% chance of winning so I call (10% of 17.5 BB is 1.75BB and it costs me 1 BB to call). Is this the right way to think about it?

\Paradise Poker 0.02/0.04 Hold'em (9 handed) converter

Preflop: Hero is MP1 with 9[img]/images/graemlins/diamond.gif[/img], 9[img]/images/graemlins/club.gif[/img]. CO posts a blind of $0.02.
UTG calls, UTG+1 calls, <font color="#CC3333">Hero raises</font>, <font color="#666666">1 fold</font>, MP3 calls, CO (poster) calls, <font color="#666666">1 fold</font>, SB calls, BB calls, UTG calls, UTG+1 calls.

Flop: (14 SB) 4[img]/images/graemlins/diamond.gif[/img], 6[img]/images/graemlins/diamond.gif[/img], 7[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(7 players)</font>
SB checks, BB checks, UTG checks, UTG+1 checks, <font color="#CC3333">Hero bets</font>, MP3 calls, CO calls, SB calls, BB calls, UTG calls, UTG+1 calls.

Turn: (10.50 BB) T[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(7 players)</font>
SB checks, BB checks, UTG checks, UTG+1 checks, <font color="#CC3333">Hero bets</font>, MP3 calls, CO folds, SB calls, BB folds, UTG calls, UTG+1 calls.

River: (15.50 BB) 2[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(5 players)</font>
SB checks, UTG checks, <font color="#CC3333">UTG+1 bets</font>, Hero calls, MP3 folds, SB calls, UTG folds.

Final Pot: 18.50 BB